If a specific post was interesting or useful to you, we recommend that you Like that post. It tells the post author, and others, that you found the information valuable. Clicking Like is another way to let others know that you enjoy it without leaving a comment.
Log in to join the conversation and Like this content.
Maybe you've just chosen to sniff around spots you thought were sweet that turned out not to be. The selection process is heavily involved with the way such interactions turn out.